Plaster.



TED STATES IPA ion.

JAMES EDWIN FAIRFAX, 0F AIKEN, SOUTH CAROLINA, ASSIG-NOB 0F ONE-HALF TOGEORGE E. WEBB, OF AIKEN, SOUTH CAROLINA.

PLASTER.

No Drawing.

T 0 all whom it may concern Be it known that I, JAMEs EDWIN FAIR- mx, acitizen of the United States, and a resident of Aiken, in the county ofAiken and State of South Carolina, have invented a new and ImprovedPlaster, of which and inexpensive plaster which is easily prepared andwhich will set rapidly when the same is cast, rendering the surface ofthe plaster highly polished. I obtain the above object by adding to theplaster of Paris a certain amount of slaked lime and then adding stalebeer, apple jelly and salt in proper proportions.

The composition is prepared as follows: The stale beer, apple jelly andsalt are mixed in water, and to this mixture is then added the plasterof Paris until a proper consistency is obtained. The plaster of Parisadded to the mixture contains one-twentieth of its weight of air-slakedlime thoroughly mixed therewith.

The relative quantities of the ingredients that I prefer to use are asfollows; To one gallon of water one ounce of stale beer is added, thenone-half ounce of apple elly,

Y preferably the Bull Head brand, and one hundred grains of salt. Thisis thoroughly mixed and to the mixture is then added the plaster ofParis containing the one-twentieth of its weight of air-slaked limeuntil a proper consistency of the ingredients is obtained, so that thesame can be easily Specification of Letters Patent.

worked. The stale beer should preferably be left open for abouttwenty-four hours before mixing with the other ingredients. The saidbeer helps to hold the set ofthe plaster of Paris. The apple jelly alsohelps to hold the set of the plaster of Paris, and the salt brings thebeer and apple jelly together, thus adding to the hardness of theplaster of Paris. This mixture is preferably to be used for castingpurposes, but it can be used for any other similar purpose.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. A plaster consisting of a mixture of stale beer, apple jelly, salt,plaster of Paris, and air-slaked lime in the proportion stated, to whichwater is added to form a proper consistency for molding, and whichplaster is characterized by forming a polished surface when cast.

2. A plaster consisting of one gallon of water, one ounce of stale beer,half an ounce of apple jelly, 100 grains of salt, and enough plaster ofParis containing onetwentieth of its weight of air-slaked lime to bringthe mixture to its proper consistency for molding.

In testimony whereof I have signed my name to this specification in thepresence of the subscribing witnesses.

JAMES EDWIN FAIRFAX.

\Vitnesses FRAMITON TOOLE,

his NATHAN X Jones,

mark

G. L. TooLE.

Patented Dec. 29, 1914i.

Application filed December 10, 1913. Serial No. 805,786

